Window ventilator



July 6 1926.

J. HEINKEL WINDOW VENTILATOR Filed Feb. 28, 1923 72y JMQ A WWNE Patented July 6, 1926;

UNITED STATES PATENT OFFICE.

ONE-HALF TO ALBERT HEINKEL, OF ST. LOUIS, MISSOURI.

WINDOW VENTILATOR.

Application filed February 28, 1923.

My invention relates to improvements in window ventilators and has for its object to provide a ventilating box, removably seated on a window sill and having an in take closed or opened by the lower rail of the window-sash, the box having an open inner mouth, and a. damper interposed between the intake and inner mouth.

Drawings.

Fig. 1 is a perspective view of a ventilator embodying my invention.

Fig. 2 is a cross-sectional view of the same, taken on the line 2--2 of Fig. 1, in place upon a window.

Fig. 8 is a fragmental view taken on the line 3-3 of Fig. 1.

Description.

The box or housing A comprises the flat bottom 4, inclined inner wall 5 and vertical outer wall 6 (having the longitudinal intake aperture 7), and ends 8, the lower faces of the lugs 16 when in lowered position bearing upon the top edges of the ends 8, to lock the housing A in place .upon the sill 13.

The screen 9 covers the aperture 7, and the interior of the housing A has a partition .10 containing perforations 11, above which perforations 11 is the slide-damper 12 having perforations 11, and thrown into or out of registration with said perforation 11 by means of the knob with which the damper 12 is provided. The damper 12 is slidably mounted on the partition 10 by means of the ears 15, welded or otherwise suitably fastened to the upper face of the partition 10.

The structure thus described is held in the position shown in Fig. 2 by means of lugs 16 revolvably mounted on screws 17 and thus secured to the opposing faces of the window casing E, the housing A resting upon the sill B as shown in Fig. 2.

The bottom rail C of the sash D is illustrated in Fig. 2 in a raised position; when in closed position, as indicated by dotted lines in Fig. 2, it serves to close the intake aperture 7. When the sash D is in closed position the flexible weather strip 18 func tions to form an air-tight joint between the housing A and sash rail C. When the sash D is raised the flexible weather strip 19,

perforations 13 corresponding to the Serial No. 621,709.

at the top of the wall 6 functions to form an air-tight joint between the sash rail 0 and housing A. Other weather strips 2020 are mounted vertically at the inner edges of the ends 8-8.

The upper edge of the inner wall 5 may be inturned to form the flange 21; the top edge of the Wall 6 may be inturned to form the flange 22, and between these flanges cross braces 23, are secured, reinforcing the housing A.

The structure thus described may be readily removed from the sill B by releasing the lugs 16.

The air admitted through the intake 7 is discharged through the flaring inner mouth of the housing A in the manner indicated by arrows in Fig. 2; the volume of air thus admitted being subject to control by the operation of the damper 12, by means of which it may be shut off entirely when desired, without disturbing the sash D.

The slide-damper is located as shown in.

Figs. 1 and 2 in a plane substantiallybeneath the plane of the outer mouth of the conduit, in order to induce a vertical draft through the conduit and to protect the aircurrents emitted through the perforations 11 from being checked by air currents outside the window.

I claim A window ventilator comprising in combination an open-mouthed housing having a flat bottom arranged to be seated upon a window sill, a. vertical outer wall arranged to be mounted in alinement with the inner face of a window sash and having a screened,

longitudinal intake aperture adjacent its.

lower edge, an inclined inner wall, and end closures; a perforated partition mounted in said housing in a plane above the top of the intake aperture and below the plane of the top of the housing; a slide-damper mounted on said partition; locking means arranged to hold the housing in place upon a window sill; two parallel weather strips mounted respectively above and below said intake aperture and arranged to respectively contact with the bottom-rail of an adjacent window sash when said sash is in opened or closed position to form a seal herewith.

In testimony whereof I have hereunto affixed my signature.

JOHN HEINKEL. 

